Hiro Ona / Mbed 2 deprecated Nucleo_073_OLED

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependencies:   mbed

Adafruit_GFX.cpp@0:cb63da12fdcc, 2019-11-26 (annotated)

Committer:
wakabanban
Date:
Tue Nov 26 04:49:45 2019 +0000
Revision:
0:cb63da12fdcc
ADC Sample

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wakabanban 0:cb63da12fdcc 1 /***********************************
wakabanban 0:cb63da12fdcc 2 This is a our graphics core library, for all our displays.
wakabanban 0:cb63da12fdcc 3 We'll be adapting all the
wakabanban 0:cb63da12fdcc 4 existing libaries to use this core to make updating, support
wakabanban 0:cb63da12fdcc 5 and upgrading easier!
wakabanban 0:cb63da12fdcc 6
wakabanban 0:cb63da12fdcc 7 Adafruit invests time and resources providing this open source code,
wakabanban 0:cb63da12fdcc 8 please support Adafruit and open-source hardware by purchasing
wakabanban 0:cb63da12fdcc 9 products from Adafruit!
wakabanban 0:cb63da12fdcc 10
wakabanban 0:cb63da12fdcc 11 Written by Limor Fried/Ladyada for Adafruit Industries.
wakabanban 0:cb63da12fdcc 12 BSD license, check license.txt for more information
wakabanban 0:cb63da12fdcc 13 All text above must be included in any redistribution
wakabanban 0:cb63da12fdcc 14 ****************************************/
wakabanban 0:cb63da12fdcc 15
wakabanban 0:cb63da12fdcc 16 /*
wakabanban 0:cb63da12fdcc 17 * Modified by Neal Horman 7/14/2012 for use in mbed
wakabanban 0:cb63da12fdcc 18 */
wakabanban 0:cb63da12fdcc 19
wakabanban 0:cb63da12fdcc 20 #include "mbed.h"
wakabanban 0:cb63da12fdcc 21
wakabanban 0:cb63da12fdcc 22 #include "Adafruit_GFX.h"
wakabanban 0:cb63da12fdcc 23 #include "glcdfont.h"
wakabanban 0:cb63da12fdcc 24
wakabanban 0:cb63da12fdcc 25 #if defined(GFX_WANT_ABSTRACTS)
wakabanban 0:cb63da12fdcc 26 // draw a circle outline
wakabanban 0:cb63da12fdcc 27 void Adafruit_GFX::drawCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color)
wakabanban 0:cb63da12fdcc 28 {
wakabanban 0:cb63da12fdcc 29 int16_t f = 1 - r;
wakabanban 0:cb63da12fdcc 30 int16_t ddF_x = 1;
wakabanban 0:cb63da12fdcc 31 int16_t ddF_y = -2 * r;
wakabanban 0:cb63da12fdcc 32 int16_t x = 0;
wakabanban 0:cb63da12fdcc 33 int16_t y = r;
wakabanban 0:cb63da12fdcc 34
wakabanban 0:cb63da12fdcc 35 drawPixel(x0, y0+r, color);
wakabanban 0:cb63da12fdcc 36 drawPixel(x0, y0-r, color);
wakabanban 0:cb63da12fdcc 37 drawPixel(x0+r, y0, color);
wakabanban 0:cb63da12fdcc 38 drawPixel(x0-r, y0, color);
wakabanban 0:cb63da12fdcc 39
wakabanban 0:cb63da12fdcc 40 while (x<y)
wakabanban 0:cb63da12fdcc 41 {
wakabanban 0:cb63da12fdcc 42 if (f >= 0)
wakabanban 0:cb63da12fdcc 43 {
wakabanban 0:cb63da12fdcc 44 y--;
wakabanban 0:cb63da12fdcc 45 ddF_y += 2;
wakabanban 0:cb63da12fdcc 46 f += ddF_y;
wakabanban 0:cb63da12fdcc 47 }
wakabanban 0:cb63da12fdcc 48 x++;
wakabanban 0:cb63da12fdcc 49 ddF_x += 2;
wakabanban 0:cb63da12fdcc 50 f += ddF_x;
wakabanban 0:cb63da12fdcc 51
wakabanban 0:cb63da12fdcc 52 drawPixel(x0 + x, y0 + y, color);
wakabanban 0:cb63da12fdcc 53 drawPixel(x0 - x, y0 + y, color);
wakabanban 0:cb63da12fdcc 54 drawPixel(x0 + x, y0 - y, color);
wakabanban 0:cb63da12fdcc 55 drawPixel(x0 - x, y0 - y, color);
wakabanban 0:cb63da12fdcc 56 drawPixel(x0 + y, y0 + x, color);
wakabanban 0:cb63da12fdcc 57 drawPixel(x0 - y, y0 + x, color);
wakabanban 0:cb63da12fdcc 58 drawPixel(x0 + y, y0 - x, color);
wakabanban 0:cb63da12fdcc 59 drawPixel(x0 - y, y0 - x, color);
wakabanban 0:cb63da12fdcc 60 }
wakabanban 0:cb63da12fdcc 61 }
wakabanban 0:cb63da12fdcc 62
wakabanban 0:cb63da12fdcc 63 void Adafruit_GFX::drawCircleHelper( int16_t x0, int16_t y0, int16_t r, uint8_t cornername, uint16_t color)
wakabanban 0:cb63da12fdcc 64 {
wakabanban 0:cb63da12fdcc 65 int16_t f = 1 - r;
wakabanban 0:cb63da12fdcc 66 int16_t ddF_x = 1;
wakabanban 0:cb63da12fdcc 67 int16_t ddF_y = -2 * r;
wakabanban 0:cb63da12fdcc 68 int16_t x = 0;
wakabanban 0:cb63da12fdcc 69 int16_t y = r;
wakabanban 0:cb63da12fdcc 70
wakabanban 0:cb63da12fdcc 71 while (x<y)
wakabanban 0:cb63da12fdcc 72 {
wakabanban 0:cb63da12fdcc 73 if (f >= 0)
wakabanban 0:cb63da12fdcc 74 {
wakabanban 0:cb63da12fdcc 75 y--;
wakabanban 0:cb63da12fdcc 76 ddF_y += 2;
wakabanban 0:cb63da12fdcc 77 f += ddF_y;
wakabanban 0:cb63da12fdcc 78 }
wakabanban 0:cb63da12fdcc 79 x++;
wakabanban 0:cb63da12fdcc 80 ddF_x += 2;
wakabanban 0:cb63da12fdcc 81 f += ddF_x;
wakabanban 0:cb63da12fdcc 82
wakabanban 0:cb63da12fdcc 83 if (cornername & 0x4)
wakabanban 0:cb63da12fdcc 84 {
wakabanban 0:cb63da12fdcc 85 drawPixel(x0 + x, y0 + y, color);
wakabanban 0:cb63da12fdcc 86 drawPixel(x0 + y, y0 + x, color);
wakabanban 0:cb63da12fdcc 87 }
wakabanban 0:cb63da12fdcc 88
wakabanban 0:cb63da12fdcc 89 if (cornername & 0x2)
wakabanban 0:cb63da12fdcc 90 {
wakabanban 0:cb63da12fdcc 91 drawPixel(x0 + x, y0 - y, color);
wakabanban 0:cb63da12fdcc 92 drawPixel(x0 + y, y0 - x, color);
wakabanban 0:cb63da12fdcc 93 }
wakabanban 0:cb63da12fdcc 94
wakabanban 0:cb63da12fdcc 95 if (cornername & 0x8)
wakabanban 0:cb63da12fdcc 96 {
wakabanban 0:cb63da12fdcc 97 drawPixel(x0 - y, y0 + x, color);
wakabanban 0:cb63da12fdcc 98 drawPixel(x0 - x, y0 + y, color);
wakabanban 0:cb63da12fdcc 99 }
wakabanban 0:cb63da12fdcc 100
wakabanban 0:cb63da12fdcc 101 if (cornername & 0x1)
wakabanban 0:cb63da12fdcc 102 {
wakabanban 0:cb63da12fdcc 103 drawPixel(x0 - y, y0 - x, color);
wakabanban 0:cb63da12fdcc 104 drawPixel(x0 - x, y0 - y, color);
wakabanban 0:cb63da12fdcc 105 }
wakabanban 0:cb63da12fdcc 106 }
wakabanban 0:cb63da12fdcc 107 }
wakabanban 0:cb63da12fdcc 108
wakabanban 0:cb63da12fdcc 109 void Adafruit_GFX::fillCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color)
wakabanban 0:cb63da12fdcc 110 {
wakabanban 0:cb63da12fdcc 111 drawFastVLine(x0, y0-r, 2*r+1, color);
wakabanban 0:cb63da12fdcc 112 fillCircleHelper(x0, y0, r, 3, 0, color);
wakabanban 0:cb63da12fdcc 113 }
wakabanban 0:cb63da12fdcc 114
wakabanban 0:cb63da12fdcc 115 // used to do circles and roundrects!
wakabanban 0:cb63da12fdcc 116 void Adafruit_GFX::fillCircleHelper(int16_t x0, int16_t y0, int16_t r, uint8_t cornername, int16_t delta, uint16_t color)
wakabanban 0:cb63da12fdcc 117 {
wakabanban 0:cb63da12fdcc 118 int16_t f = 1 - r;
wakabanban 0:cb63da12fdcc 119 int16_t ddF_x = 1;
wakabanban 0:cb63da12fdcc 120 int16_t ddF_y = -2 * r;
wakabanban 0:cb63da12fdcc 121 int16_t x = 0;
wakabanban 0:cb63da12fdcc 122 int16_t y = r;
wakabanban 0:cb63da12fdcc 123
wakabanban 0:cb63da12fdcc 124 while (x<y)
wakabanban 0:cb63da12fdcc 125 {
wakabanban 0:cb63da12fdcc 126 if (f >= 0)
wakabanban 0:cb63da12fdcc 127 {
wakabanban 0:cb63da12fdcc 128 y--;
wakabanban 0:cb63da12fdcc 129 ddF_y += 2;
wakabanban 0:cb63da12fdcc 130 f += ddF_y;
wakabanban 0:cb63da12fdcc 131 }
wakabanban 0:cb63da12fdcc 132 x++;
wakabanban 0:cb63da12fdcc 133 ddF_x += 2;
wakabanban 0:cb63da12fdcc 134 f += ddF_x;
wakabanban 0:cb63da12fdcc 135
wakabanban 0:cb63da12fdcc 136 if (cornername & 0x1)
wakabanban 0:cb63da12fdcc 137 {
wakabanban 0:cb63da12fdcc 138 drawFastVLine(x0+x, y0-y, 2*y+1+delta, color);
wakabanban 0:cb63da12fdcc 139 drawFastVLine(x0+y, y0-x, 2*x+1+delta, color);
wakabanban 0:cb63da12fdcc 140 }
wakabanban 0:cb63da12fdcc 141
wakabanban 0:cb63da12fdcc 142 if (cornername & 0x2)
wakabanban 0:cb63da12fdcc 143 {
wakabanban 0:cb63da12fdcc 144 drawFastVLine(x0-x, y0-y, 2*y+1+delta, color);
wakabanban 0:cb63da12fdcc 145 drawFastVLine(x0-y, y0-x, 2*x+1+delta, color);
wakabanban 0:cb63da12fdcc 146 }
wakabanban 0:cb63da12fdcc 147 }
wakabanban 0:cb63da12fdcc 148 }
wakabanban 0:cb63da12fdcc 149 #endif
wakabanban 0:cb63da12fdcc 150
wakabanban 0:cb63da12fdcc 151 #if defined(GFX_WANT_ABSTRACTS) || defined(GFX_SIZEABLE_TEXT)
wakabanban 0:cb63da12fdcc 152 // bresenham's algorithm - thx wikpedia
wakabanban 0:cb63da12fdcc 153 void Adafruit_GFX::drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t color)
wakabanban 0:cb63da12fdcc 154 {
wakabanban 0:cb63da12fdcc 155 int16_t steep = abs(y1 - y0) > abs(x1 - x0);
wakabanban 0:cb63da12fdcc 156
wakabanban 0:cb63da12fdcc 157 if (steep)
wakabanban 0:cb63da12fdcc 158 {
wakabanban 0:cb63da12fdcc 159 swap(x0, y0);
wakabanban 0:cb63da12fdcc 160 swap(x1, y1);
wakabanban 0:cb63da12fdcc 161 }
wakabanban 0:cb63da12fdcc 162
wakabanban 0:cb63da12fdcc 163 if (x0 > x1)
wakabanban 0:cb63da12fdcc 164 {
wakabanban 0:cb63da12fdcc 165 swap(x0, x1);
wakabanban 0:cb63da12fdcc 166 swap(y0, y1);
wakabanban 0:cb63da12fdcc 167 }
wakabanban 0:cb63da12fdcc 168
wakabanban 0:cb63da12fdcc 169 int16_t dx, dy;
wakabanban 0:cb63da12fdcc 170 dx = x1 - x0;
wakabanban 0:cb63da12fdcc 171 dy = abs(y1 - y0);
wakabanban 0:cb63da12fdcc 172
wakabanban 0:cb63da12fdcc 173 int16_t err = dx / 2;
wakabanban 0:cb63da12fdcc 174 int16_t ystep;
wakabanban 0:cb63da12fdcc 175
wakabanban 0:cb63da12fdcc 176 if (y0 < y1)
wakabanban 0:cb63da12fdcc 177 ystep = 1;
wakabanban 0:cb63da12fdcc 178 else
wakabanban 0:cb63da12fdcc 179 ystep = -1;
wakabanban 0:cb63da12fdcc 180
wakabanban 0:cb63da12fdcc 181 for (; x0<=x1; x0++)
wakabanban 0:cb63da12fdcc 182 {
wakabanban 0:cb63da12fdcc 183 if (steep)
wakabanban 0:cb63da12fdcc 184 drawPixel(y0, x0, color);
wakabanban 0:cb63da12fdcc 185 else
wakabanban 0:cb63da12fdcc 186 drawPixel(x0, y0, color);
wakabanban 0:cb63da12fdcc 187
wakabanban 0:cb63da12fdcc 188 err -= dy;
wakabanban 0:cb63da12fdcc 189 if (err < 0)
wakabanban 0:cb63da12fdcc 190 {
wakabanban 0:cb63da12fdcc 191 y0 += ystep;
wakabanban 0:cb63da12fdcc 192 err += dx;
wakabanban 0:cb63da12fdcc 193 }
wakabanban 0:cb63da12fdcc 194 }
wakabanban 0:cb63da12fdcc 195 }
wakabanban 0:cb63da12fdcc 196
wakabanban 0:cb63da12fdcc 197 void Adafruit_GFX::drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color)
wakabanban 0:cb63da12fdcc 198 {
wakabanban 0:cb63da12fdcc 199 // stupidest version - update in subclasses if desired!
wakabanban 0:cb63da12fdcc 200 drawLine(x, y, x, y+h-1, color);
wakabanban 0:cb63da12fdcc 201 }
wakabanban 0:cb63da12fdcc 202
wakabanban 0:cb63da12fdcc 203 void Adafruit_GFX::fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color)
wakabanban 0:cb63da12fdcc 204 {
wakabanban 0:cb63da12fdcc 205 // stupidest version - update in subclasses if desired!
wakabanban 0:cb63da12fdcc 206 for (int16_t i=x; i<x+w; i++)
wakabanban 0:cb63da12fdcc 207 drawFastVLine(i, y, h, color);
wakabanban 0:cb63da12fdcc 208 }
wakabanban 0:cb63da12fdcc 209 #endif
wakabanban 0:cb63da12fdcc 210
wakabanban 0:cb63da12fdcc 211 #if defined(GFX_WANT_ABSTRACTS)
wakabanban 0:cb63da12fdcc 212 // draw a rectangle
wakabanban 0:cb63da12fdcc 213 void Adafruit_GFX::drawRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color)
wakabanban 0:cb63da12fdcc 214 {
wakabanban 0:cb63da12fdcc 215 drawFastHLine(x, y, w, color);
wakabanban 0:cb63da12fdcc 216 drawFastHLine(x, y+h-1, w, color);
wakabanban 0:cb63da12fdcc 217 drawFastVLine(x, y, h, color);
wakabanban 0:cb63da12fdcc 218 drawFastVLine(x+w-1, y, h, color);
wakabanban 0:cb63da12fdcc 219 }
wakabanban 0:cb63da12fdcc 220
wakabanban 0:cb63da12fdcc 221 void Adafruit_GFX::drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color)
wakabanban 0:cb63da12fdcc 222 {
wakabanban 0:cb63da12fdcc 223 // stupidest version - update in subclasses if desired!
wakabanban 0:cb63da12fdcc 224 drawLine(x, y, x+w-1, y, color);
wakabanban 0:cb63da12fdcc 225 }
wakabanban 0:cb63da12fdcc 226
wakabanban 0:cb63da12fdcc 227 void Adafruit_GFX::fillScreen(uint16_t color)
wakabanban 0:cb63da12fdcc 228 {
wakabanban 0:cb63da12fdcc 229 fillRect(0, 0, _width, _height, color);
wakabanban 0:cb63da12fdcc 230 }
wakabanban 0:cb63da12fdcc 231
wakabanban 0:cb63da12fdcc 232 // draw a rounded rectangle!
wakabanban 0:cb63da12fdcc 233 void Adafruit_GFX::drawRoundRect(int16_t x, int16_t y, int16_t w, int16_t h, int16_t r, uint16_t color)
wakabanban 0:cb63da12fdcc 234 {
wakabanban 0:cb63da12fdcc 235 // smarter version
wakabanban 0:cb63da12fdcc 236 drawFastHLine(x+r , y , w-2*r, color); // Top
wakabanban 0:cb63da12fdcc 237 drawFastHLine(x+r , y+h-1, w-2*r, color); // Bottom
wakabanban 0:cb63da12fdcc 238 drawFastVLine( x , y+r , h-2*r, color); // Left
wakabanban 0:cb63da12fdcc 239 drawFastVLine( x+w-1, y+r , h-2*r, color); // Right
wakabanban 0:cb63da12fdcc 240 // draw four corners
wakabanban 0:cb63da12fdcc 241 drawCircleHelper(x+r , y+r , r, 1, color);
wakabanban 0:cb63da12fdcc 242 drawCircleHelper(x+w-r-1, y+r , r, 2, color);
wakabanban 0:cb63da12fdcc 243 drawCircleHelper(x+w-r-1, y+h-r-1, r, 4, color);
wakabanban 0:cb63da12fdcc 244 drawCircleHelper(x+r , y+h-r-1, r, 8, color);
wakabanban 0:cb63da12fdcc 245 }
wakabanban 0:cb63da12fdcc 246
wakabanban 0:cb63da12fdcc 247 // fill a rounded rectangle!
wakabanban 0:cb63da12fdcc 248 void Adafruit_GFX::fillRoundRect(int16_t x, int16_t y, int16_t w, int16_t h, int16_t r, uint16_t color)
wakabanban 0:cb63da12fdcc 249 {
wakabanban 0:cb63da12fdcc 250 // smarter version
wakabanban 0:cb63da12fdcc 251 fillRect(x+r, y, w-2*r, h, color);
wakabanban 0:cb63da12fdcc 252
wakabanban 0:cb63da12fdcc 253 // draw four corners
wakabanban 0:cb63da12fdcc 254 fillCircleHelper(x+w-r-1, y+r, r, 1, h-2*r-1, color);
wakabanban 0:cb63da12fdcc 255 fillCircleHelper(x+r , y+r, r, 2, h-2*r-1, color);
wakabanban 0:cb63da12fdcc 256 }
wakabanban 0:cb63da12fdcc 257
wakabanban 0:cb63da12fdcc 258 // draw a triangle!
wakabanban 0:cb63da12fdcc 259 void Adafruit_GFX::drawTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color)
wakabanban 0:cb63da12fdcc 260 {
wakabanban 0:cb63da12fdcc 261 drawLine(x0, y0, x1, y1, color);
wakabanban 0:cb63da12fdcc 262 drawLine(x1, y1, x2, y2, color);
wakabanban 0:cb63da12fdcc 263 drawLine(x2, y2, x0, y0, color);
wakabanban 0:cb63da12fdcc 264 }
wakabanban 0:cb63da12fdcc 265
wakabanban 0:cb63da12fdcc 266 // fill a triangle!
wakabanban 0:cb63da12fdcc 267 void Adafruit_GFX::fillTriangle ( int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color)
wakabanban 0:cb63da12fdcc 268 {
wakabanban 0:cb63da12fdcc 269 int16_t a, b, y, last;
wakabanban 0:cb63da12fdcc 270
wakabanban 0:cb63da12fdcc 271 // Sort coordinates by Y order (y2 >= y1 >= y0)
wakabanban 0:cb63da12fdcc 272 if (y0 > y1)
wakabanban 0:cb63da12fdcc 273 swap(y0, y1); swap(x0, x1);
wakabanban 0:cb63da12fdcc 274
wakabanban 0:cb63da12fdcc 275 if (y1 > y2)
wakabanban 0:cb63da12fdcc 276 swap(y2, y1); swap(x2, x1);
wakabanban 0:cb63da12fdcc 277
wakabanban 0:cb63da12fdcc 278 if (y0 > y1)
wakabanban 0:cb63da12fdcc 279 swap(y0, y1); swap(x0, x1);
wakabanban 0:cb63da12fdcc 280
wakabanban 0:cb63da12fdcc 281
wakabanban 0:cb63da12fdcc 282 if(y0 == y2)
wakabanban 0:cb63da12fdcc 283 { // Handle awkward all-on-same-line case as its own thing
wakabanban 0:cb63da12fdcc 284 a = b = x0;
wakabanban 0:cb63da12fdcc 285 if(x1 < a)
wakabanban 0:cb63da12fdcc 286 a = x1;
wakabanban 0:cb63da12fdcc 287 else if(x1 > b)
wakabanban 0:cb63da12fdcc 288 b = x1;
wakabanban 0:cb63da12fdcc 289
wakabanban 0:cb63da12fdcc 290 if(x2 < a)
wakabanban 0:cb63da12fdcc 291 a = x2;
wakabanban 0:cb63da12fdcc 292 else if(x2 > b) b = x2;
wakabanban 0:cb63da12fdcc 293 drawFastHLine(a, y0, b-a+1, color);
wakabanban 0:cb63da12fdcc 294 return;
wakabanban 0:cb63da12fdcc 295 }
wakabanban 0:cb63da12fdcc 296
wakabanban 0:cb63da12fdcc 297 int16_t
wakabanban 0:cb63da12fdcc 298 dx01 = x1 - x0,
wakabanban 0:cb63da12fdcc 299 dy01 = y1 - y0,
wakabanban 0:cb63da12fdcc 300 dx02 = x2 - x0,
wakabanban 0:cb63da12fdcc 301 dy02 = y2 - y0,
wakabanban 0:cb63da12fdcc 302 dx12 = x2 - x1,
wakabanban 0:cb63da12fdcc 303 dy12 = y2 - y1,
wakabanban 0:cb63da12fdcc 304 sa = 0,
wakabanban 0:cb63da12fdcc 305 sb = 0;
wakabanban 0:cb63da12fdcc 306
wakabanban 0:cb63da12fdcc 307 // For upper part of triangle, find scanline crossings for segments
wakabanban 0:cb63da12fdcc 308 // 0-1 and 0-2. If y1=y2 (flat-bottomed triangle), the scanline y1
wakabanban 0:cb63da12fdcc 309 // is included here (and second loop will be skipped, avoiding a /0
wakabanban 0:cb63da12fdcc 310 // error there), otherwise scanline y1 is skipped here and handled
wakabanban 0:cb63da12fdcc 311 // in the second loop...which also avoids a /0 error here if y0=y1
wakabanban 0:cb63da12fdcc 312 // (flat-topped triangle).
wakabanban 0:cb63da12fdcc 313 if(y1 == y2)
wakabanban 0:cb63da12fdcc 314 last = y1; // Include y1 scanline
wakabanban 0:cb63da12fdcc 315 else
wakabanban 0:cb63da12fdcc 316 last = y1-1; // Skip it
wakabanban 0:cb63da12fdcc 317
wakabanban 0:cb63da12fdcc 318 for(y=y0; y<=last; y++)
wakabanban 0:cb63da12fdcc 319 {
wakabanban 0:cb63da12fdcc 320 a = x0 + sa / dy01;
wakabanban 0:cb63da12fdcc 321 b = x0 + sb / dy02;
wakabanban 0:cb63da12fdcc 322 sa += dx01;
wakabanban 0:cb63da12fdcc 323 sb += dx02;
wakabanban 0:cb63da12fdcc 324 /* longhand:
wakabanban 0:cb63da12fdcc 325 a = x0 + (x1 - x0) * (y - y0) / (y1 - y0);
wakabanban 0:cb63da12fdcc 326 b = x0 + (x2 - x0) * (y - y0) / (y2 - y0);
wakabanban 0:cb63da12fdcc 327 */
wakabanban 0:cb63da12fdcc 328 if(a > b)
wakabanban 0:cb63da12fdcc 329 swap(a,b);
wakabanban 0:cb63da12fdcc 330 drawFastHLine(a, y, b-a+1, color);
wakabanban 0:cb63da12fdcc 331 }
wakabanban 0:cb63da12fdcc 332
wakabanban 0:cb63da12fdcc 333 // For lower part of triangle, find scanline crossings for segments
wakabanban 0:cb63da12fdcc 334 // 0-2 and 1-2. This loop is skipped if y1=y2.
wakabanban 0:cb63da12fdcc 335 sa = dx12 * (y - y1);
wakabanban 0:cb63da12fdcc 336 sb = dx02 * (y - y0);
wakabanban 0:cb63da12fdcc 337 for(; y<=y2; y++)
wakabanban 0:cb63da12fdcc 338 {
wakabanban 0:cb63da12fdcc 339 a = x1 + sa / dy12;
wakabanban 0:cb63da12fdcc 340 b = x0 + sb / dy02;
wakabanban 0:cb63da12fdcc 341 sa += dx12;
wakabanban 0:cb63da12fdcc 342 sb += dx02;
wakabanban 0:cb63da12fdcc 343 /* longhand:
wakabanban 0:cb63da12fdcc 344 a = x1 + (x2 - x1) * (y - y1) / (y2 - y1);
wakabanban 0:cb63da12fdcc 345 b = x0 + (x2 - x0) * (y - y0) / (y2 - y0);
wakabanban 0:cb63da12fdcc 346 */
wakabanban 0:cb63da12fdcc 347 if(a > b)
wakabanban 0:cb63da12fdcc 348 swap(a,b);
wakabanban 0:cb63da12fdcc 349 drawFastHLine(a, y, b-a+1, color);
wakabanban 0:cb63da12fdcc 350 }
wakabanban 0:cb63da12fdcc 351 }
wakabanban 0:cb63da12fdcc 352
wakabanban 0:cb63da12fdcc 353 void Adafruit_GFX::drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color)
wakabanban 0:cb63da12fdcc 354 {
wakabanban 0:cb63da12fdcc 355 for (int16_t j=0; j<h; j++)
wakabanban 0:cb63da12fdcc 356 {
wakabanban 0:cb63da12fdcc 357 for (int16_t i=0; i<w; i++ )
wakabanban 0:cb63da12fdcc 358 {
wakabanban 0:cb63da12fdcc 359 if (bitmap[i + (j/8)*w] & _BV(j%8))
wakabanban 0:cb63da12fdcc 360 drawPixel(x+i, y+j, color);
wakabanban 0:cb63da12fdcc 361 }
wakabanban 0:cb63da12fdcc 362 }
wakabanban 0:cb63da12fdcc 363 }
wakabanban 0:cb63da12fdcc 364 #endif
wakabanban 0:cb63da12fdcc 365
wakabanban 0:cb63da12fdcc 366 size_t Adafruit_GFX::writeChar(uint8_t c)
wakabanban 0:cb63da12fdcc 367 {
wakabanban 0:cb63da12fdcc 368 if (c == '\n')
wakabanban 0:cb63da12fdcc 369 {
wakabanban 0:cb63da12fdcc 370 cursor_y += textsize*8;
wakabanban 0:cb63da12fdcc 371 cursor_x = 0;
wakabanban 0:cb63da12fdcc 372 }
wakabanban 0:cb63da12fdcc 373 else if (c == '\r')
wakabanban 0:cb63da12fdcc 374 cursor_x = 0;
wakabanban 0:cb63da12fdcc 375 else
wakabanban 0:cb63da12fdcc 376 {
wakabanban 0:cb63da12fdcc 377 drawChar(cursor_x, cursor_y, c, textcolor, textbgcolor, textsize);
wakabanban 0:cb63da12fdcc 378 cursor_x += textsize*6;
wakabanban 0:cb63da12fdcc 379 if (wrap && (cursor_x > (_width - textsize*6)))
wakabanban 0:cb63da12fdcc 380 {
wakabanban 0:cb63da12fdcc 381 cursor_y += textsize*8;
wakabanban 0:cb63da12fdcc 382 cursor_x = 0;
wakabanban 0:cb63da12fdcc 383 }
wakabanban 0:cb63da12fdcc 384 }
wakabanban 0:cb63da12fdcc 385 return 1;
wakabanban 0:cb63da12fdcc 386 }
wakabanban 0:cb63da12fdcc 387
wakabanban 0:cb63da12fdcc 388 // draw a character
wakabanban 0:cb63da12fdcc 389 void Adafruit_GFX::drawChar(int16_t x, int16_t y, unsigned char c, uint16_t color, uint16_t bg, uint8_t size)
wakabanban 0:cb63da12fdcc 390 {
wakabanban 0:cb63da12fdcc 391 if(
wakabanban 0:cb63da12fdcc 392 (x >= _width) || // Clip right
wakabanban 0:cb63da12fdcc 393 (y >= _height) || // Clip bottom
wakabanban 0:cb63da12fdcc 394 ((x + 5 * size - 1) < 0) || // Clip left
wakabanban 0:cb63da12fdcc 395 ((y + 8 * size - 1) < 0) // Clip top
wakabanban 0:cb63da12fdcc 396 )
wakabanban 0:cb63da12fdcc 397 return;
wakabanban 0:cb63da12fdcc 398
wakabanban 0:cb63da12fdcc 399 for (int8_t i=0; i<6; i++ )
wakabanban 0:cb63da12fdcc 400 {
wakabanban 0:cb63da12fdcc 401 uint8_t line = 0;
wakabanban 0:cb63da12fdcc 402
wakabanban 0:cb63da12fdcc 403 if (i == 5)
wakabanban 0:cb63da12fdcc 404 line = 0x0;
wakabanban 0:cb63da12fdcc 405 else
wakabanban 0:cb63da12fdcc 406 line = font[(c*5)+i];
wakabanban 0:cb63da12fdcc 407
wakabanban 0:cb63da12fdcc 408 for (int8_t j = 0; j<8; j++)
wakabanban 0:cb63da12fdcc 409 {
wakabanban 0:cb63da12fdcc 410 if (line & 0x1)
wakabanban 0:cb63da12fdcc 411 {
wakabanban 0:cb63da12fdcc 412 #if defined(GFX_WANT_ABSTRACTS) || defined(GFX_SIZEABLE_TEXT)
wakabanban 0:cb63da12fdcc 413 if (size == 1) // default size
wakabanban 0:cb63da12fdcc 414 drawPixel(x+i, y+j, color);
wakabanban 0:cb63da12fdcc 415 else // big size
wakabanban 0:cb63da12fdcc 416 fillRect(x+(i*size), y+(j*size), size, size, color);
wakabanban 0:cb63da12fdcc 417 #else
wakabanban 0:cb63da12fdcc 418 drawPixel(x+i, y+j, color);
wakabanban 0:cb63da12fdcc 419 #endif
wakabanban 0:cb63da12fdcc 420 }
wakabanban 0:cb63da12fdcc 421 else if (bg != color)
wakabanban 0:cb63da12fdcc 422 {
wakabanban 0:cb63da12fdcc 423 #if defined(GFX_WANT_ABSTRACTS) || defined(GFX_SIZEABLE_TEXT)
wakabanban 0:cb63da12fdcc 424 if (size == 1) // default size
wakabanban 0:cb63da12fdcc 425 drawPixel(x+i, y+j, bg);
wakabanban 0:cb63da12fdcc 426 else // big size
wakabanban 0:cb63da12fdcc 427 fillRect(x+i*size, y+j*size, size, size, bg);
wakabanban 0:cb63da12fdcc 428 #else
wakabanban 0:cb63da12fdcc 429 drawPixel(x+i, y+j, bg);
wakabanban 0:cb63da12fdcc 430 #endif
wakabanban 0:cb63da12fdcc 431 }
wakabanban 0:cb63da12fdcc 432 line >>= 1;
wakabanban 0:cb63da12fdcc 433 }
wakabanban 0:cb63da12fdcc 434 }
wakabanban 0:cb63da12fdcc 435 }
wakabanban 0:cb63da12fdcc 436
wakabanban 0:cb63da12fdcc 437 void Adafruit_GFX::setRotation(uint8_t x)
wakabanban 0:cb63da12fdcc 438 {
wakabanban 0:cb63da12fdcc 439 x %= 4; // cant be higher than 3
wakabanban 0:cb63da12fdcc 440 rotation = x;
wakabanban 0:cb63da12fdcc 441 switch (x)
wakabanban 0:cb63da12fdcc 442 {
wakabanban 0:cb63da12fdcc 443 case 0:
wakabanban 0:cb63da12fdcc 444 case 2:
wakabanban 0:cb63da12fdcc 445 _width = _rawWidth;
wakabanban 0:cb63da12fdcc 446 _height = _rawHeight;
wakabanban 0:cb63da12fdcc 447 break;
wakabanban 0:cb63da12fdcc 448 case 1:
wakabanban 0:cb63da12fdcc 449 case 3:
wakabanban 0:cb63da12fdcc 450 _width = _rawHeight;
wakabanban 0:cb63da12fdcc 451 _height = _rawWidth;
wakabanban 0:cb63da12fdcc 452 break;
wakabanban 0:cb63da12fdcc 453 }
wakabanban 0:cb63da12fdcc 454 }